Automatic heat-regulating device



(No Model.)

N. C. BUTLER 8v F. D. ROSENBERGER. AUTOMATIC HEAT EEGULATING DEVICE. No.400,826.

Patented'Apr. 2, 1889.

WJIJVESSES,

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N. PETERS. Pholn-Ulimgmphnr. Wnshnglnn. D. C.

NITEDI STATES NATHAN COLE nBUTLER AND FRANK D. ROSENBERGER, OF LEIPSIO,OHIO.

AUTOMATIC HEAT-REGULATING DEVICE.

SPECIFICATION forming part of Letters Patent No. 400,826, dated April 2,1889.

Application iiled May 7, 1888. Serial No. 273,069. (No model.)

To all whom t may concern,.-

Be it known that we, NATHAN COLE BUT- LER and FRANK D. ROSENBERGER,residents of Leipsic, in the county of Putnam and State of Ohio, haveinvented certain new and useful Improvements in AutomaticHeat-Regulating' Devices; and we do hereby declare that the following isa full, clear and exact description of the invention, which will enableothers skilled in the art to which it appertains to make and use thesame;

This invention relates to automatic heatregulating devices.

' The object is to produce a device for regulating automatically theflow of gas to a stove using the same as fuel, whereby an eventemperature may be at all times maintained in a room in which the stoveis placed; furthermore, to produce a device which shall be simple ofconstruction, efficient and durable in use, and comparativelyinexpensive of production.

lVith these objects in view the invention consists in the improvedconstruction and combination of parts of an automatic heatregulatingdevice, as will be hereinafter fully described in the specification,illustrated in the drawing, and more particularly pointed out in theclaims.

In the accompanying drawing, forming part of this specification,and inwhich like letters of reference indicate corresponding parts, the figureis a side elevation, partly in section, showing the deviceintaet.

Referring to the drawing, A designates a frame, which is to be fastenedto the wall of a room in a perpendicular position, and at a part subjectto the greatest change of temperature-as, for instance, near the door.To this frame is secured,at its upper end, a thermostat, B, of theordinary construction, and composed o'f a composition of metals thatwill be highly sensitive to the different changes of the atmosphere. Thelower portion, l), of the thermostat connects with a valve-stem, D,which passes through a stutling-box, d, and into the globe-valve E. Thelower end of the valve-stem is provided with shoulders d', which engagecorresponding shoulders, f, on the cap f', which is screwed on the valveF.

Between the end of the valve-stem and the top of the valve a space isleft, in which is placed a rubber gasket, f2, the peculiar function ofwhich will be described farther on.

a globe-valve mounted on it provided with a gravity-valve, g, which isheld or poised above the valve-seat g by the pressure of the gas, and toinsure its perfect working-that is, to cause the valve to set squarelyon its seatthe valve-stein works in an opening, g2, in the cap of thevalve, thereby causing the parts to come together to form a gas-tightjoint. This branch pipe is further provided with a mixing-chamber, H,having air-inlets 7i, through which the air is fed to the gas insufficient quantities to insure the complete combustion of all thecarbon in the gas, which not only serves to produce a more intense heat,but also to prevent the interior of the stove from becoming fouled withlamp-black. The gaspipe 7i extends some distance into the branch pipe,so as to prevent any of the gas escaping from the inlets.

I designates a smaller pipe leading from the branch pipe G, and designedto supply gas to the stove when the pressure in the globe-valve hasbecome insuiiieient to hold the gravity-valve up, by means" of which asmall amount of gas may at all times be fed to the stove.

The device operates as follows: Suppose it is desired to keep thetemperature of a room at 70. The valve F on the thermostat is Afirstraised above its seat a sufficient distance to allow the necessaryquantity of gas to pass'to the burner to raise the temperature of theroom to that degree, and the thermostat is then secured in place andholds the valve fixed in the position to which it was adjusted; butshould the weather moderate the temperature in the room would naturallyrise above the 70C. Should this happen, the difference in temperaturewould immediately act on the thermostat and cause it to expand, therebyclosing the valve slightly and cutting olf enough of the gas to causethe temperature to remain at the desired degree. Now if the temperatureof the room should become lower than 70O the thermostat would contract,thereby opening the valve and allowing a larger supply of gas tovbe fedto the stove; but

should the temperature of the room rise to a IOO point greatly abovethat originally intended 1l ie thermostat would expand more than wouldbe necessary to elose the Valve, and iu that event the valve-stem wouldpress upon the rubber gasket, thus preventing injury to the mocdianism,as by the jamming` of the parts to- `sgether. ri`he [low of would thenbe eut olf lfrom the braneh pipe through the valve, but would stili be:fed in a small quantity to the branch pipe through an opening, e, inthe diaphragm ot' therz'ilve. The pressure of gas in the braneh pipewould then be insufficient io poise the gravitywalve. This would thenelose `and Cause the gas to be fed through the small pipe l.

Having thus fully described our invention, what we elaim as new, anddesire to secure by Letters Patent1v isl. ln :in automat-ieheat-regulating device, the Combination oi' a main burner, a supplypipeegnnniun ieating therewith, a branch pipe eonnnuxii'xatinr with thesupply-pipe, asupplen'iental burner located adjacent to th e main burnerand eominuniezitting with the brauch pipe, a gravitvvalve in the mainpipe between ihobraneh pipe and main burneropening toward the burner,and a globe-valve .in the supply-pipe having a permanently-openperforation in the diaphragm, substantially as described.

2. In an automatic heatregulating device, the combination of a mainburner, a supplypipe eommimica-ting` therewith, a branch pipeCommunicating with the supply-pipe, a suppleinental burner located adjaeent to the main burner and communicating with the branch \Vitnesses:

Tm. L. VI IA nnnMiANN, IsnA si; H. RosENnui-zona.

